✉️ Cosmic Postcard
How long would your message take to reach the stars at the speed of light?
Sending to
Uranus
Solar SystemTravel time at speed of light
2.7 light-hours
Postcard Preview
FROM: Earth, Solar System
🌍 → ✨
TO: Uranus
“Hello from Earth!”
Estimated delivery: 2.7 light-hours from now